There are many things that can interfere with a bluetooth signal. Here is a link which gives some ideas of what can interfere and how it can be remedied. It is geared towards Apple stuff but it still applies. We all use so many devices these days that can cause interference it is hard to say which ones may be a problem. I would definitely send a unit into Outlaw and let them take a look at it.

https://support.apple.com/en-us/HT201542
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Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner